Pot type burner and improved air supply means therefor



May 23, 1944. a HAY-[ER 2,34%?22 POT TYPE BURNER AND IMPROVED AIR SUPPLY MEANS THEREFOR Filed March 14, 1942 2 Sheets-Sheet l sseeseeeeeeeg eeee fflzvenzfor Bruce Haggis?" @FMXMQ QQ J R y 2 9 B. HAYTER 2,349,722

POT TYPE BURNER AND IMPROVED AIR SUPPLY MEANS THEREFOR Filed March 14 1942 2 Sheets-Sheet 2 .Zrzac jzb yier,

Patented May zii, 1944 POT BURNER AND IMIPROVEI) AIR;

SUPPLYMEANS THEREFOR Bruce Hayter, Santa Fe, N. Mex., .assignor to Oil Devices, Santa Fe, N. Men, 9. limited partnership of Illinois 1 Application March 14,1952, Serial No. 434,659

, i 2 Claims. (Cl. 158-90 My invention relates to an improvement in oil burners and has for one purpose 'to provide an improved pot type'oil burner.

. Another purpose is to pilotmeans therefor, v

Another pu'ipo'seis to provide an improved means fordelivering air to the burnerat pilot stage..

provide .an improved Other purposes will appear from time to time-in the course of the-specification. V

' I illustrate my invention -more or less diathe accompanying drawings grammatically in wherein: V Fig. l'is a vertical axial section; Fig, 2 is a section on the line 2-4 of Fig. 1; Fig.3 is a-lpartial vertical axial section of a variant form;

Fig.4 is a-partial plan View of the structure shownin Figure 3;

Fig. 5 is a section on the line 5-5 of Fig. 3; Fig. 6 is a partial vertical axial section through a further variation of the device;

Fig, 7 is a :partial plan view of the structure shown in Fig. 6, with parts broken away; and.

Fig. 8 is a plan view of a slight modification.

. tion.

or thermostatically; such control devices not of themselvesformin'g partofthe present inven-' It will be understood that any suitable meansfor varying the flow of fuel to the burner may be employed, preferably maintaining a minimum i-low suflicient to support combustion in theburner at the pilot stage.

15 is a centrally located air inlet duct, which.

may be made of varying size and height but which is hereinshown as terminating near or just above the level of the primary airinlet'apertures It); It may be formed unitarily with the bottom of the pot, "or it may be secured thereto. I illustrate for example a nut l6, which may be welded or otherwise secured to the bottom of the pot'5 in alignment with the central aperture ll in the pot bottom.- The duct l5 may then be screw threaded, if desired, into the nut l6. l8

' i: any suitable pilot ring centrally apertured as at. H and supported for example on supporting pins or legs inwardly extending from the inner Like parts are indicated by like symbols throughout the specification and drawings.

Referring to the. drawings, I generally indicates an outer housing or drum,lwhich may be of any suitable form, but which is herein shown as generally cylindrical. It maybe supported,

for example, on anysuitable supporting legs or I means 2. v 3 indicates a bottom having a central air inlet aperture 4. an uppe'r outwardly extending flange 6, which may rest on a ring or any other suitable support 8 is any-suitable flame ring having a centralaper-' 7 extending inwardly from the member I.

ture 9. i

I The pot 5 is herein shown as having a plurality of primary air inlet apertures I0; located in asingle row in a lower portion of the pot. Any suitable means for admitting secondaryrair-may be employed, but I illustrate, herein a single row of secondaryair inlet apertures 9 which are more closely spaced than the primary airaperregulating the fiowof fuel inwardly along the pipe I: may b employed; for example a,con-

ventional float valve, and/it will be understood flows upwardly through the pipe l5 and inwardly *wall of the-pot 5. It will be observed that the pilot ring "is located just above the primary below the secondary inlet apertures ll. 7.

Itwill be understood that air flows upwardly through the-aperture 4 and about the pot. 5.

Primary air for the maintenance of combustion at the pilot or low stage of the device flows inwardly through the apertures l0. Secondary air through the apertures H. v At the lowstage-com- 5is a burner pot having bustion-takes place at or just above the pilot ring 3. At the highest stage combustion takes place inlets IU-and is located a substantial distance at,or above the flame ring 8. While the height Referring to Fig. 3, employ a. shortened duct 25 and positioned thereabout is a cylindrical of the duct l5 may be varied, I find it very sat:v

.is'factory to terminate the duct at the general .level of the pilot ring l8.

' element 26, havingi'a top portion 21, 'having a H plurality of air apertures 28. The cylinder.

may be centered on th air inlet duct 25, for

turesllland which-may be upwardly and "in wardly tilted, as shown in Fig. 1. I h l. 7 I3 is any suitable liquid fuel inlet pipepwhich may'extend 'from any suitable source-of fuel. It

will-be understood thatany suitable means for example by an inwardly extending flange or annulus 29,. having a plurality of airpassages or holes 30." The cylinder is closed at the bottom by a bottom portion 3 l which may have a spacing shoulder 32, which extends downwardly about the duct is and abuts againstthe bottom of the pot or'the nut 250. It is also'shown as having a plurality of air apertures a. The wall of the cylinder 26 provided with an upper row of air apertures- 3! anda lower row of apertures 35, preferably downwardly and outwardly tilted. It

that variations of flow may be obtainedmanually will thus be observedthat the duct 25 serves as a 1 bottom of the pot.

. unitary air supply tor the distributing member. 2 6.

and that member 28 may be employed to deliver air downwardly at or near the bottom of the pot and downwardly and outwardly through the apertures 35, directly outwardly at a higher level through the'apertures 34, and upwardly through bustion stage.

In Fig. 6 I illustrate a further variation at the device in which a central inletor duct 40 is employed corresponding to the inlet 25-of Fig. 3, and the inlet. I5 of Fig. 1. At the top of the duct 40 I position a mushroom structure 4| having a downwardly and inwardly inclined bottom wall- 42, provided with a plurality of air apertures 43.

In Figs. 6 and 7 I illustrate the top of the mushroom 4| as'formed by a closed or solid plate 44. In Fig. 8 it is indicated that the top 44 may have a plurality of airapertures 45,

which direct the air upwardly through the central aperture of the pilot ring l8. In the form of Fig. 6, therefore, the mushroom and the apertures 43 are advantageous as directing primary air for the'pilot stage downwardly toward the In this case the secondary air for the pilot stage may be supplied by the air inlets ill or may be supplied above the ring I8 by the air inlets" ll. The pilot stage may be maintained adjacent the level of the apertures III or adjacent or slightly above the level of the ring l8. In the form of Fig. 8 some secondary air for the low stage may be provided by the apertures 45 in the top of the mushroom.

It will be realized that, whereas I have illus-' trated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish that the description and drawi as part of the primary air for the higher comings be taken as in a broad sense illustrative or diagrammatic, rather than as a limitation to the precise showing. I claim: 1. In a pot type burner, a burner pot having a circumferential generally cylindrical wall, a

means for supplying a liquid fuel to the interior of the pot, the wall of the pot having a plurality .of air inlet apertures arranged circumferentially in two rows, one of said rows being generally intermediate top and bottom of the pot, the other being substantially closer to the top of the pot, a centrally apertured pilot ring located intermediate top and bottom of the pot and just above the lowest of the air inlet apertures, whereby air is admitted through the wall of the pot both above and below the pilot ring, and additional means for supplying air to the interior of the pot including an air inlet duct extending upwardly from the bottom of the pot in general axial alignment with the central aperture of the pilot ring, the duct being adapted to deliver air into the interior of the pot at a level adjacent the level of the pilot-ring.

2. In a pot type burner, a. burner not having a circumferential generally cylindrical wall, means for supplying a liquid fuel to the interior of the pot, the wall of the pot having a plurality of air inlet apertures arranged circumferentially in two rows, one of said rowsbeing generally intermediate top and bottom of the pot, the other being substantially closer to the top of the pot, a centrally apertured pilot ring located intermediate top and bottom of the pot and just above the lowest of the air inlet apertures, whereby air is admitted through the wall of the pot both above and below the pilot ring, and'additional means for supplying air to the interior of the pot, including an air inlet duct extending upwardly from the bottom of the pot in general axial alignment with the central aperture of the pilot ring, and a distributor element on said duct having a wall provided with apertures positioned to direct air from the duct into the space below the pilot ring.

BRUCE HAYTER. 

